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To: LindyBill who wrote (25230)	5/23/2000 8:46:00 PM
From: Thomas Mercer-Hursh	Respond to of 54805

Perhaps the resistance in the wire is more than in the glass? If memory serves ... and I did say it had been a while ... the speed is marginally higher in glass, but only by a relatively small fraction in the overall picture, i.e., not enough for that to be in any way the source of the enhanced bandwidth. I believe that the bandwidth has to do largely with the difference in frequency spectrums, i.e., one can modulate many more separate frequencies within photon spectrum (or overlay more variation on the base frequency, which amounts to much the same thing) than one can in the electron spectrum. Please correct me someone if I have this wrong since it was mostly from about 35 years back.